1240700636 has 12 divisors (see below), whose sum is σ = 2481401328. Its totient is φ = 531728832.

The previous prime is 1240700623. The next prime is 1240700641. The reversal of 1240700636 is 6360070421.

1240700636 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1240700599 and 1240700608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22155341 + ... + 22155396.

It is an arithmetic number, because the mean of its divisors is an integer number (206783444).

Almost surely, 2^1240700636 is an apocalyptic number.

It is an amenable number.

1240700636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1240700636 is a wasteful number, since it uses less digits than its factorization.

1240700636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44310748 (or 44310746 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 1240700636 is about 35223.5806811289. The cubic root of 1240700636 is about 1074.5393767694.

The spelling of 1240700636 in words is "one billion, two hundred forty million, seven hundred thousand, six hundred thirty-six".